Even brahmgyanis can make mistake!

[shastarSingh]

Bhai Gurdas was a pooran brahmgyani, way ahead than present day babaas.

He made a mistake and wrote:

If Guru tests His sikh, sikh shud not waver....

Guru Arjan dev ji told Bhai gurdas to correct his line, Bhai Gurdas corrected it by writing:

If Guru tests His sikh, what can the sikh do?

[shastarSingh]

Baba Atal Rai, probably a brahmgyani or very close to it,brought a dead friend of his to life and Guru Hargobind Sahib did not like it and asked His son to die as he interfered in God's hukam.

Same thing happened to baba Gurditta ji, a brahmgyani for sure, when he brought a dead cow to life and Guru Hargobind Sahib did not like it and baba Gurditta ji had to give his life.

[shastarSingh]

AMdir sBu ko ABulu gurU krqwru ]

bhulan a(n)dhar sabh ko abhul guroo karataar ||

Everyone makes mistakes; only the Guru and the Creator are infallible.